Plastic article or earthenware shaping or treating: apparatus – With upstream screen or perforated plate for straining,...
Reexamination Certificate
2007-02-13
2007-02-13
Del Sole, Joseph S. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
With upstream screen or perforated plate for straining,...
C425S113000, C425S140000, C425S198000, C425S205000, C264S169000, C264S211000
Reexamination Certificate
active
10787209
ABSTRACT:
The present invention concerns a process for producting cables, in particular cables for the distribution of electrical energy or cables for telecommunications, more particularly, cables having at least one covering layer comprising a composition of high viscosity. More particularly, the present invention concerns cables having at least one covering layer comprising a polymeric composition comprising a mineral filler capable of imparting one or more specific properties to the aforesaid cables. In accordance with the present invention, said production process comprises the stages of: conveying at least one conducting element inside of an extruder; feeding the polymeric material, optionally premixed with other components of said composition, into said extruder, filtering the material transferred and plasticized by the screw of said extruder; depositing said material onto said at least one conducting element, the filtration operation being performed with a filtration efficiency greater than 0.8, preferably greater than 0.9. The present invention concerns, in addition, an apparatus for the purpose of performing the production process mentioned above.
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Belli Sergio
Locatelli Angelo Giuseppe
Pozzati Giovanni
Veggetti Paolo
Del Sole Joseph S.
Ewald Maria Veronica
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Prysmian Cavi E Sistemi Energia S.R.L.
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